Surface pressure and shear stress fields within a frictional contact on rubber

Toan Nguyen Danh (1, 2) , Pierdomenico Paolino (1) , M.C. Audry (1, 3) , Antoine Chateauminois (1) , Christian Frétigny (1) , Yohan Le Chenadec (2) , M. Portigliatti (2) , Etienne Barthel (3)

1 PPMD - Laboratoire de Physico-Chimie des Polymères et des Milieux Dispersés
2 Manufacture Française des Pneumatiques Michelin
3 SVI - Surface du Verre et Interfaces

This paper addresses the issue of the determination of the frictional stress distribution from the inversion of the measured surface displacement field for sliding interfaces between a glass lens and a rubber (poly(dimethylsiloxane)) substrate. Experimental results show that high lateral strains are achieved at the periphery of the sliding contacts. As a consequence, an accurate inversion of the displacement field requires that finite strains and non linear response of the rubber substrate are taken into account. For that purpose, a Finite Element (FE) inversion procedure is implemented where the measured displacement field is applied as a boundary condition at the upper surface of a meshed body representing the rubber substrate. Normal pressure is also determined by the same way, if non-diverging values are assumed at the contact edge. This procedure is applied to linearly sliding contacts as well as on twisting contacts.

Mots clés: displacement field; friction; linear sliding; local friction law; rubber; torsional contacts

Domaines: Science des matériaux [cond-mat.mtrl-sci]

Toan Nguyen Danh, Pierdomenico Paolino, M.C. Audry, Antoine Chateauminois, Christian Frétigny, et al.. Surface pressure and shear stress fields within a frictional contact on rubber. The Journal of Adhesion, 2011, 87 (3), pp.235-250. ⟨10.1080/00218464.2011.557340⟩. ⟨hal-00594624⟩